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nystagmus |
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nystagmus [nə′stag·məs] (medicine) Involuntary oscillatory movement of the eyeballs. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The diagnosis is based on findings of typical positional rotatory nystagmus provoked by the head-hanging position (Hallpike maneuver) [2] and the observation of certain characteristic features, including a brief latency (usually 1 to 5 sec), limited duration (usually [greater than]30 sec), reversal on assuming an upright position, and a fatiguing of the response on repeat testing. |
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